A standardized database of Last Interglacial (MIS 5e) sea-level indicators in Southeast Asia

Maxwell, Kathrine; Westphal, Hildegard

doi:10.5194/essd-13-4313-2021

Cited by 7 publications

(2 citation statements)

References 54 publications

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“…The other two samples, SRK‐A1 and SRK‐A2, are from a sub‐terrace that is lower than the main Terrace II at Block C (Campsite; Figure 2 and Table 1). The modeled age of Lc‐01 is 127.5 ka (Table 1), which we correlate to the period of MIS 5e (∼128–∼116 ka; e.g., Kukla et al., 2002; Shackleton, 1969, 2000) when the sea level was about 4 m (e.g., in Cebu and Bohol Island; Maxwell et al., 2021) to 9 m (in Bahamas; Hearty & Neumann, 2001) above the current sea level. The modeled U‐Th ages of SRK‐A1 and SRK‐A2 are 83.7 ka and 84.7 ka, respectively (Table 1).…”

Section: Resultssupporting

confidence: 58%

“…The formation of Terrace I must, however, precede the formation time of Terrace II. Based on the dating results of Terrace II (see Section 4.1.2) as well as the terrace ages from other places in Southeast Asia (e.g., the Philippines; see Maxwell et al., 2021), we suggest that Terrace I is likely formed during Marine Isotope Stage (MIS) 7a (202–190 ka; Dutton et al., 2009) when the global sea level was between −18.5 m (Dutton et al., 2009) and −9 m (Bard et al., 2002) relative to the modern sea level.…”

Section: Resultsmentioning

confidence: 99%

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Mud Diapir or Fault‐Related Fold? On the Development of an Active Mud‐Cored Anticline Offshore Southwestern Taiwan

et al. 2022

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There has been a controversial debate about the roles of diapiric folding versus fault‐related folding in mud‐cored anticlines. This study tackles this debate by looking into the structural developments in southwestern Taiwan. Among all the structures, the Liuchiu anticline is the only active structure exposed above sea level and therefore offers a unique opportunity to integrate land and marine data sets. On Liuchiu Island, we obtained the fold core geometry at the surface and identified three terrace groups with age constraints. In the offshore area, we obtained the fold limb geometry from seismic profiles. Given the tight fold shape and the asymmetric terrace tilting, we found that a hybrid fault tip fold‐fault propagation fold model can best explain the geologic and geomorphic features. In this regard, mud diapirism should be a secondary process, possibly along discrete patches of mobile shales to enhance fold amplification. Our model yields decreasing shortening rates from 0.7 mm/yr during the Plio‐Pleistocene to 0.375 mm/yr since 120 ka. The uplift rate however increases since the mid‐Holocene, which we tentatively attribute to larger mobile shale deformation triggered by earthquakes along the fault after the near‐fault fluids are drained. At the regional scale, we further suggest that the remaining plate convergence is absorbed by a few major structures west of Liuchiu Island.

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